2020UNE-EN ISO 13437:2020 Geosynthetics - Installing and retrieving samples in the field for durability assessment (ISO 13437:2019)
1999UNE-EN ISO 13437:1999 GEOTEXTILES AND GEOTEXTILE-RELATED PRODUCTS - METHOD FOR INSTALLING AND EXTRACTING SAMPLES IN SOIL, AND TESTING SPECIMENS IN LABORATORY (ISO 13437:1998)